Base | Representation |
---|---|
bin | 1100011100110110111… |
… | …1100011110111110000 |
3 | 202110010102100202100101 |
4 | 3013031233203313300 |
5 | 12001034212210410 |
6 | 242133334402144 |
7 | 21311525103415 |
oct | 3071557436760 |
9 | 673112322311 |
10 | 213905194480 |
11 | 827979a666a |
12 | 35558500354 |
13 | 1722c0b59c3 |
14 | a4d2b5a10c |
15 | 586e0cbd3a |
hex | 31cdbe3df0 |
213905194480 has 40 divisors (see below), whose sum is σ = 501126010704. Its totient is φ = 84908928000.
The previous prime is 213905194471. The next prime is 213905194511. The reversal of 213905194480 is 84491509312.
It is a tau number, because it is divible by the number of its divisors (40).
It is a self number, because there is not a number n which added to its sum of digits gives 213905194480.
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10194921 + ... + 10215880.
Almost surely, 2213905194480 is an apocalyptic number.
213905194480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.
It is an amenable number.
213905194480 is an abundant number, since it is smaller than the sum of its proper divisors (287220816224).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
213905194480 is a wasteful number, since it uses less digits than its factorization.
213905194480 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 20410945 (or 20410939 counting only the distinct ones).
The product of its (nonzero) digits is 311040, while the sum is 46.
The spelling of 213905194480 in words is "two hundred thirteen billion, nine hundred five million, one hundred ninety-four thousand, four hundred eighty".
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